AI Damage2015 Mercedes-Benz GL350: common problems
Owners of the 2015 Mercedes-Benz GL350 filed 7 complaints with NHTSA, most often about fuel/propulsion system and vehicle speed control. Details by component below, with sources.
Key figures
- Owner complaints
- 7
- involving a crash
- 1
What fails most often
- 1 Fuel/propulsion system 29% of all complaints
- 2 Vehicle speed control 29% of all complaints
- 3 Engine 14% of all complaints
- 4 Latches, locks, linkages 14% of all complaints
- 5 Visibility 14% of all complaints
- Fuel/propulsion system: 2 complaints (29% of all).
- Vehicle speed control: 2 complaints (29% of all), 1 of them with a crash reported by the owner.
- Engine: 1 complaints (14% of all).
- Latches, locks, linkages: 1 complaints (14% of all).
- Visibility: 1 complaints (14% of all).
Symptoms owners describe
How many of the 7 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Fuel/propulsion system | 2 | 0 | 0 |
| Vehicle speed control | 2 | 1 | 0 |
| Engine | 1 | 0 | 0 |
| Latches, locks, linkages | 1 | 0 | 0 |
| Visibility | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Tl* the contact owns a 2015 mercedes-benz gl350. While driving less than 5 mph, the vehicle suddenly accelerated at a high rate of speed. The contact applied force to the brake pedal, but the vehicle failed to slow down and crashed into a palm tree. There were no injuries and a police report was not filed.
On Mercedes GL350, the trunk/ hatch door will not open from outside. It just stopped working. Therefore, I tried to open it from inside, but there is no manual latch inside to open the trunk/ hatch door. It is a safety issue. The dealer, Mercedes Benz of Richmond, [address], charged $235 to open the hatch door.
Took to [dealer] dealer in Torrance because of engine light on. Cause: "Obsolete CDI Control Unit Software" Repair: "Updated to latest software version" Charge: $224.99 because "not covered by Emissions Warranty Extension" Do not understand how Mercedes Benz does not provide a critical software upgrade for free or…
The odor was very strong and I had to lower the windows in order to breathe. The mechanic informed me that there was an oil leak near the turbo. I had to replace the fuel injector and leak line, in addition to all pipe seals at turbo.
Tl* the contact owns a 2015 mercedes-benz gl350w. While driving 70 mph, the contact's husband engaged the cruise control. When the driver tapped the brake pedal to deactivate the cruise control, the brake pedal traveled to the floorboard and the vehicle accelerated. The speedometer went to zero.
The vehicle stalled because of the failure. Roadside assistance helped the contact by placing fuel in the vehicle, but the fuel leak prevented the contact from being able to start the vehicle. The contact stated that the fire department arrived to clean up the fuel.
The fix is easy as to stalled wipers. The system must be reprogrammed so the wipers continue to wipe even if the wipers do not return to the park position (because of accumulated snow, for example). As to iced-over wipers, the manufacturer must install heating elements in the base of the
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 12,539 of 36,659 model years in the NHTSA data (top 34% most complained about).
On average one model year of the GL350 has 10 complaints (9 years in the data). This year has 7, below average.
What to check before buying
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Latches, locks, linkages. Door, hood and tailgate latches, especially near the impact.
Other years of this model
Questions and answers
What are the most common problems with the 2015 Mercedes-Benz GL350?
Owner complaints to NHTSA most often mention: fuel/propulsion system, vehicle speed control, engine. Total complaints: 7. The most frequent symptoms in complaint texts: stalls while driving (29%), door locks, latches, handles (14%), fuel system, fuel smell (14%).
How many service bulletins (TSB) were issued for the 2015 Mercedes-Benz GL350?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2015 Mercedes-Benz GL350 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2015 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.